Check if emoji character

Question

I have a Java servlet which accepts text from mobile devices. I need to check each character and check if it is a normal text or if it is an emoji before I insert it into my database. The problem I am having is how do I detect if a character is emoji?

Answer 1

ok simple example defined private string emoji regex.

 private final String regex = "([\\u20a0-\\u32ff\\ud83c\\udc00-\\ud83d\\udeff\\udbb9\\udce5-\\udbb9\\udcee])";

variable with test sentence

test = "josh stevens is the best "

you can use a Matcher to find any group in the test string that matches the regex.

Matcher matchEmo = Pattern.compile(regex).matcher(test);
while (matchEmo.find()) {
    System.out.println(matchEmo.group());
}

this will print the emoji which matches them in string. Hope this helps.